DataFrames apparently do not allow columns to be multidimensional DataArrays.
julia> DataFrame(A = 1:5, B = DataArray(reshape(1:15,(5,3)))) ERROR: ArgumentError: setindex!(::DataFrame, ...) only broadcasts scalars, not arrays in setindex! at C:\Users\s2sajs\.julia\v0.4\DataFrames\src\dataframe\dataframe.jl:356 Is that a bug, or an unintentional restriction, or an intentional restriction?
